Window guard



WINDOW GUARD Filed Dec. 26, 1931 INVENTOR. L17 L/O 6W BY Q MW,

M ATTORNEY.

Patented Nov. 21, 1933 f Application December 26, 1931 Serial No.583,376

1 Claims. (01. 292-49) My invention has reference to a window guard,and. has for its chief purpose to provide a coupling means between theupper and lower sash of a window, which will control the degree to whichsaid sash may be overlapped, and consequently the amount of space whichmay be pro-.

vided below the lower sash or above the upper sash. This is accomplishedby means of a detent strip of special form, provided with one or moreretaining elements which may be selectively employed for positioning thelower sash above the sill or the upper sash below the upper frame.

The device is so arranged that the sash is controlled thereby for alimited distance above the 'sill, above which point the sash can bemoved freely, the parts re-engaging automatically upon the sash beingmoved downwardly again.

The means for engagement with the detent mechanism consists of a dualcatch mechanism, each of which can act independently of the other, andeach of which acts as a guard'for the other, so that in the event of oneof such mechanisms being tampered with and being ineffective, the otherone will still prevent the opening of the window. For the operation ofsaid catches a special cam device is provided, operative with both ofthe catches together, or with either one alone. Theprincipal parts ofthe guard can be formed of sheet metal, and with a low cost ofproduction. The particular construction, arrangement, and operation ofthe various parts of the invention will more fully appear from thefollowing speci fication, taken in connection with the accompanyingdrawing, in which;-

Fig. 1 shows the fragmentary portion of a door frame and sash, with theinvention attached thereto. I

Fig. 2 is an enlarged detail thereof.

Fig. 3 is a plan view of the latch mechanism, in engaging position.

Fig. 4 is a similar view with both catches in released position.

Fig. 5 is a similar view with one of the catches j in released position.

Fig. 6 is a cross-section on the broken line 6-6 of Figure 3. I

In the drawing herein the invention is shown at only one side of thewindow, but it can be installed at both sides if desired, for additionalsecurity. By means of the device the upper and lower sash of a windowcan be connected, so as to move upwardly or downwardly together, and itwill be understood that when a space is referred to as being providedfor at the bottom of the window a similar space can be formed at the topby moving the two sash downwardly.

The reference number 1 indicates a part of a window frame, 2 thefragmentary portion of an upper sash, and 3 a fractional part of thelower sash. Fixed to the side rail of the sash 2 is a detent plateconsisting of a channel-strip 4, secured to such rail as by screws, andprovided with a series of detents 5, projected laterally from the sideedges of such strip, and arranged in pairs at the sides thereof. Beneaththe detents are inclined edges 6, ending downwardly in straight tracks7, and at its upper end said plate terminates in a point 8.

Fixed to the rail 9 of the lower sash, in line with the plate 4 is aplate 10, having a raised portion 11, to which is pivoted a pair ofcatches 12 and 13, as at a and b. At their outer ends said catches passthrough slots 14 in an upwardly turned flange 15 on the end of the plate10, and at th'elrsides portions of the latch material are struckdownwardly into connections between which is held a coiled spring 17,the tension of which tends to draw the catches in the direction of eachother, with the inner edges thereof in engagement with the edges of thedetent plate. Pivoted to the plate 11 between the catches 12 and 13 isan arch-plate 18, projected into a V-cam 19, supported normally by thecatches, as shown in Fig. 3.

The detent plate is also shown provided at its lower end with notches 8in which the catches l2 and 13 engage when the lower sash is almostclosed, preventing any movement of such sash upwardly. If it is desiredto raise the window the cam 19 is forced downwardly by the finger,moving the latches outwardly, whereupon the sash can be raised until thecatches, which have been released, come in contact with the lowermostpair of detents 6, holding the sash from further upward movement. If itis desired to increase the space at the bottom of the sash the cam 19 isactuated again; permitting a further movement of the sash upwardly untilthe next pair of detents is encountered, and so on until the catches arepermitted to pass above the end of the detent plate, in which case thewindow can be opened to any desired height without further resistance.Upon the sash 3 being returned downwardly the catches automatically passover the point 8 and downwardly into engagement with the pairs ofdetents, holding the sash at any desired point, as before. The highestpoint at which the sash is held separated from the sill may be ofpractically the same width as that of an ordinary window ventilator,permitting the use of such ventilator therein.

It will be noted that by the arrangement herein shown the spacing of thewindow .is of a selective character, the various spacings beingdetermined by the height of the detents on the plate. It will'be-obviousthat said plate may be provided with anynumber of pairs of detents, fromone up.

Either of the catches can be independently released, if desired, byforcing the cam 19 a little to one side, as shown in Fig. 5. In thedownward movement of said cam the arched portion 18 curves over thespring 17, preventing any conflict of said parts.

The double catch mechanism provides a'special guard for the window, sothat inithe .event 01E one of said catches being tampered with and WhatI claim, and desire to secure by Patent is:

A window guard comprising a detent plate adapted for attachment to oneofthe sash of a window and provided with oppositely disposed pairs ofdetents, a latch-plate for attachment to the other sash of a window, apair of catches pivoted in spaced relation on said latch-plateandadapted for engagement at their free ends with said detents, a coiledspring connecting said batches and holding the same yieldingly inengagement with said detents, an arch-plate pivoted to the latch-platebetween the pivots of said catches, and passing above the spring, and aV-cam at the free end of said arch-plate 'adapted'to engage said catchesto release the same.- 7

' THEODORE BRIEGEL.

released by an instrument on the outside of the v 7 window the othercatch will continue to hold, and prevent the opening of the window.

Letters

